Lift-bridge.



J. A. L. WADD'ELL & J. L. HARRINGTON.

WIN/8858:

MM Caflt.

@DZQDXQ LIFT BRIDGE.

APPLICATION FILED NOV. 20, 1911.

Patented J an. 7, 1913.

2 SHEETS-SHEET 1.

INVENTOHJ JAL. Waddell.

JL.Harrz'ngion.

Afro/My J. A. L. WADDELL & J. L. HARRINGTON.

LIFT BRIDGE.

APPLICATION FILED NOY.20, 1911. 1,049,422. Patented Jan. 7, 1913.

2 SHEETSSHEBT 2. 74 9.:

WWII/E8858: IN l/EN T095 .W 1. M JAL addel JLHarringion.

wzzhw I I v dpecllicaticn of Letters Patent.

Patented da. t, i913.

Application filed tl'ovemhcr lull. serial do. aerate.

20 all whom/it may earn:

Be it known that we, dorm A. L. Wannnnn and dorm LYLE l-lArmINo'roN, citizens of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Lift-Bridges; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius to make and use the same, reference being had to the accomang drawings, and to the letters and of reference marked thereon, whic form a part of this specification.

@ur invention relates to lift brid es and has for its object to provide means for carr a fluid conduit between the towers of bridge without interfering with the passa of vessels through the open span,

. without interfering with the verticalmovement of the lift span, and whereby the mid passed through the conduit may be conductor under a minimum hydraulic head. In accomplishing this object, we have provided the improved details of structure hereinafter described and illustrated in the accompanyin drawings, wherein igure 1 1s a side elevation of a lift bridge constructed according to our invention. Fig. H is a plan view of same, the approaches being removed. Fig. H1 is an end view of same. Fi 1V is an enlared detail view of a part the up 12v end of one of the towers, with parts 0 the conduit g and conduits.

. Referrin more in detail to the parts ':-l desiates ride piers, 2 3 towers, and 4 a 1i": span it is adapted for support on the piers l and for vertical travel between the towers.

5 designates cables which aconnec with the ends of the span 4 are run over sheave wheels 6 on the tops of thetoers, and carry counterweights 7 for haluuc 331 the span during its vertical travel.

0W 9 tops thereof and referablyutabout the upper tion of t e vertical lift span, is a lw sides of the towered,

riedb span 8 which is adapted for carrying a fluid conduit 9 tween the towers. The s an 8 may be of any suitable construction ut is preferably of skeleton formation, as its only function is to carry the pipe or conduit 9 across the open span. As the fluid conduit 9 approaches the towers it is supported on the bridge ap roaches, and preferably rises at the ends 0 the towers to within a short dis tance of the span 8, where it is turned laterally and is extended along the side of the tower to the span 8, across which it is con-.

ducted to connect with a like'section on the op osite tower.

u use, the bridge and lift span may be cotructed and assembled in any well lmown manner, and the conduit spans mount on the towers at such height that they will not interfere with vessels passing throuh the open span and in such position that tey will not interfere with the vertical travel of the span d.

By mounti the conduit spans as lowas ossible on the towers, a saving in hydraulic and on the fluid to be conducted therethrough may be efiected. We refer to provide a conduit span at each si e of the towers, 1 to balance the structure, and also to aord s ace for carrying a plurality of conduits w on no "wit ry. 7

Having thus described our invention, what we claim as new therein and desire to secure by Letters-Patent is 1. The combination with towers, of a span adapted for vertical movement between the towers, means for movin the span, a permanent span mounted on t c towers above the lower ition of the movable span and at one sit the vertical path thereof, and a fluid conduit carried by said span.

2. The combination with towers, of a span adapted for vertical movement between the towers, means for movin the span, a permanent span mounted on t e towers at the u per level of the movable span and at one si e of the path thereof, and a fluidconduit car:

said an.

3. a com ination with towers, of a span pied for vertical movement between the towers, means for moving the span, spans In testimony whereof we efix our signapermanently mounted on the towers at the tures in presence of two Witnesses.

upper level of the movable span and at op- JOHN A. L. WADDELL. posite sides of the path thereof and between JOHN LYLE HARRINGTON. which said'movable span is adapted to rest Witnesses: when in its uppermost position, and fluid MYRTLE M. JACKSON,

conduits carried by said spans. ARTHUR W. GAPS. 

